Wisconsin v. Illinois
449 U.S. 48 · Decided December 1, 1980 · Supreme Court of the United States
Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.
At a glance
Wisconsin v. Illinois was decided on December 1, 1980 unanimously (8–0). SCDB classifies its main issue as “Non-real property dispute between states” in the Interstate Relations area.
Read the opinion
Case details
- Citations
- 449 U.S. 48 · 101 S. Ct. 557 · 66 L. Ed. 2d 253 · 1980 U.S. LEXIS 153
- Docket number
- 1 ORIG
- Decided
- December 1, 1980
- Court era
- Burger Court
- Decision type
- Decree
- Outcome for petitioner
- The petitioning party did not receive a favorable disposition
- Vote
- 8–0 (unanimous)
- Opinion assigned by
- Warren E. Burger
- How the case arrived
- Original jurisdiction
- Issue (SCDB)
- Non-real property dispute between states
- Issue area
- Interstate Relations
- Decision direction (SCDB)
- Unspecifiable what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice William J. Brennan Jr. | Majority | |
| Justice Potter Stewart | Majority | |
| Justice Byron R. White | Majority | |
| Chief Justice Warren E. Burger | Majority | |
| Justice Harry A. Blackmun | Majority | |
| Justice Lewis F. Powell Jr. | Majority | |
| Justice William H. Rehnquist | Majority | |
| Justice John Paul Stevens | Majority |
Did not participate: Thurgood Marshall.
Full case caption
Wisconsin et al. v. Illinois et al.
SCDB identifiers: case 1980-006, docket 1980-006-01.
Related decisions
Other cases on “Non-real property dispute between states”
- Texas v. New Mexico
- Maryland v. Louisiana
- Idaho ex Rel. Evans v. Oregon
- Arizona v. California
- Colorado v. New Mexico
- Idaho ex Rel. Evans v. Oregon
Same Term, same area (Interstate Relations)
Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error